This is a little project I've been working on in my free time. I used 3DS max and a random assortment of Dwemer meshes to create a mechanical mudcrab and rig it to the mubcrab skeleton for use in Skyrim.
Download is here:
http://skyrim.nexusmods.com/mods/48180/?
Tools Used:
3DS Max 2012 (for creating the model)
Nifskope (for tweaking the model to work with Skyrim)
Gimp2 (for the texture)
BSAopt x64 (for extracting the meshes from Skyrim's BSA archives)
Bandicam (for the video)